Method and apparatus of jointing cord fabric and jointing holder in calender line

ABSTRACT

The invention enables easy jointing of cord fabric performed when cord fabric (F) for topping is alternately drawn from two supply positions (P 1 ) (P 2 ) for continuous supply, during drawing to supply of the cord fabric (F) on one side, a start end portion (Fa) of the cord fabric (F) on other side is locked to hold by a locking pin ( 3 ) of a jointing holder ( 1 ), and is set to a jointing mounting portion ( 21 ) in a state where an unvulcanized jointing rubber member (Ra) is pasted thereto, when a final end of the cord fabric (F) on the one side comes closer, a finish end portion (Fb) thereof is pasted to the start end portion (Fa) of the cord fabric (F) held by the holder ( 1 ) by interposing the rubber member (Ra) therebetween, the finish end portion (Fb) and the start end portion (Fa) are squeezed for joint from upper and lower sides by press members ( 25 ) ( 26 ), thereafter, the holder ( 1 ) is removed, and the cord fabric on the other side is made to be drawn to supply continuously to the cord fabric on the one side.

Method and apparatus of jointing cord fabric and jointing holder incalendar line

TECHNICAL FIELD

The present invention relates to a method and an apparatus of jointingcord fabric, and a jointing holder in a calendar line for fabricating atopping sheet by aligning a number of pieces of cords and coveringrubber thereon.

BACKGROUND ART

As a tire constituting member such as carcass ply of a tire or otherindustrial material, as shown by FIG. 11 and FIG. 12, there is used aso-called topping sheet A constituting core members for reinforcement bya number of pieces of cords C mainly made of a fabric and topping(covering) rubber R at least on one face (normally, both faces).

In a background art, as shown in FIG. 13, such a topping sheet A uses aso-called cord fabric F woven by constituting warp by the cord C made ofa fabric or the like and striking slender weft W serving as a connectioncoarsely at required intervals in a longitudinal direction for the coremember and is topped with rubber by a calendar apparatus while drawingto supply the cord fabric F continuously in a calendar line having aroll-type calendar apparatus as in Patent Reference 1.

Further, when the topping sheet using the cord fabric F for the coremember is used for a tire constituting member such as carcass ply, notonly the weft in the fabric does not effectively serve to reinforce thetire, but there is concern about deterioration of a tire function that auniformity failure, a separation failure or the like of the tire isbrought about by presence of the weft, and therefore, according toPatent Reference 1, in the calendar line, after removing the weft whiletransferring the cord fabric, rubber is topped thereon by passing only anumber of pieces of cords to a portion of the roll type calendarapparatus in an aligned state.

Meanwhile, in the calendar line, the cord fabric is wound in a roll-likeshape in a state of being subjected to predetermined heat treatment andadhering agent treatment and is supported by a cassette type carriageand set to a supply portion to be drawn to be supplied by driving thecalendar line, in this case, when the cord fabric is drawn from onesupply position, the carriage needs to be switched by stopping drivingthe calendar line each time the cord fabric of one piece of the carriageis terminated, and therefore, a waste margin of the cord fabric inaccordance with stopping driving the calendar line is increased,further, also a driving stop time period is prolonged to bring about areduction in a fabrication efficiency.

Therefore, generally, two pieces of the carriages for supportingroll-like wound members of the cord fabric are installed at two supplypositions, and drawn to be supplied continuously alternately one by one.

In this case, although the carriage can be set to other supply positionwhile drawing to supply the cord fabric from one carriage, when the onecord fabric has been finished to be drawn, it is necessary to joint astart end portion of the other cord fabric to a finish end portionthereof. It is desired that the jointing operation can easily be carriedout and can firmly be carried out without stopping driving the calendarline.

Patent Reference 1: JP-A-7-34379

DISCLOSURE OF THE INVENTION Problems that the Invention is to Solve

The invention provides a method and an apparatus of jointing cord fabricfor drawing to supply the cord fabric woven by constituting warp by acord constituting a core member alternately continuously from two supplypositions, and a jointing holder used for jointing the cord fabric in acalendar line of fabricating a topping sheet constituting the coremember by the reinforcement cord.

Means for Solving the Problems

The invention has been carried out in order to resolve theabove-described problem and there is provided a method of jointing acord fabric for drawing to supply a cord fabric constituted by beingwoven by constituting warp by a number of pieces of cords from twosupply positions set to a supply portion alternately continuously one byone in a calendar line for topping rubber to a number of pieces ofaligned cords by a calendar roll, wherein during drawing to supply ofthe cord fabric from one of the two supply positions, by using ajointing holder capable of holding a start end portion of the cordfabric in a stretched state, the start end portion of the cord fabricdrawn from other thereof is held by the holder and set to a jointingmounting portion in a state of pasting an unvulcanized jointing rubbermember to the start end portion, and when a final end of the cord fabricon one side comes closer, a finish end portion of the cord fabric on theone side is pasted to a start point of the cord fabric on other sideheld by the holder of the jointing mounting portion by interposing thejointing rubber member, the finish end portion and the start end portionare jointed by way of the rubber member by being squeezed from upper andlower sides, thereafter, by removing the holder, the cord fabric on theother side is made to be able to be drawn to be supplied continuously tothe cord fabric on the one side.

According to the jointing method, pieces of the cord fabric can be drawnto be supplied respectively from the two supply positions while beingjointed alternately continuously. Particularly, the start end portion ofthe cord fabric to be successively drawn is held by the jointing holderalong with the jointing rubber member and set to the predeterminedjointing mounting portion, and therefore, when a finish end portion ofthe cord fabric precedingly drawn to be supplied appears, the finish endportion can be jointed immediately to the start end portion by beingpasted to be squeezed thereto and can be jointed thereto simply withoutstopping driving the calendar line.

In the jointing method, the jointing holder projected with a pluralityof locking pins capable of piercing the cord fabric is used, and thestart end portion of the cord fabric is set to the jointing mountingportion in a state of being locked to be held by the locking pins.

Thereby, the cord fabric can be held attachably and detachably bypiercing to lock the cord fabric by the locking pins, and the finish endportion on the one side and the start end portion on the other side ofthe cord fabric can easily be removed after having been connected.

In the jointing method, a transfer portion reaching a drawing apparatusof the cord fabric on the one side drawn from the one of the supplypositions and a transfer portion reaching the drawing apparatus of thecord fabric on the other side drawn from the supply position on theother side are made to be disposed at positions different from eachother in an up and down direction, the jointing mounting portion isprovided at a middle position of the transfer portions, when the cordfabric on the one side passing the transfer portion on an upper side isdrawn, the jointing holder is set by directing the start end portion ofthe cord fabric on the other side held by the jointing holder to anupper side, further, when the cord fabric on the other side passing thetransfer portion on a lower side is drawn to be supplied, the holder isset by directing the start end portion of the cord fabric on the oneside held by the holder to a lower side.

Thereby, during drawing of the cord fabric respectively from one orother of the two supply positions provided to be aligned in a drawingdirection, previously, the start end portion of the cord fabric on otheror one side held by the jointing holder can be set to the jointingmounting portion to prepare. Therefore, when the cord fabric precedinglydrawn as described above is terminated, the finish end portion is madeto be able to be jointed immediately to the start end portion of thecord fabric held as described above.

Further, according to the invention, there is provided an apparatus ofjointing a cord fabric for embodying the jointing method, wherein atransfer portion reaching a drawing apparatus of the cord fabric on oneside drawn from the first supply position and a transfer portionreaching the drawing apparatus of the cord fabric on other side drawnfrom the second supply position are disposed at positions different fromeach other in an up and down direction, at a middle position of the twotransfer portions, a jointing mounting portion capable of setting ajointing holder capable of holding a start end portion of the cordfabric in a stretched state is provided, and upper and lower portions ofthe jointing mounting portion are provided with press members capable ofsqueezing the start end portion on the cord fabric on the other sideheld by the jointing holder and a finish end portion of the cord fabricon the one side pasted thereto.

According to the jointing apparatus, when the cord fabric on the oneside is drawn to be supplied, the start end portion of the cord fabricdrawn from the supply position on the other side can be held by thejointing holder to be horizontally mounted to be set to the jointingmounting portion. Further, in the state of being set to the jointingmounting portion, the finish end portion and the start end portion ofthe cord fabric can be squeezed from upper and lower sides by the upperand lower press members, thereby, the jointing method can excellently beembodied.

Further, the invention provides a jointing holder used for jointing acord fabric constituted by being woven by constituting warp by a numberof pieces of cords, wherein the jointing holder is projected with aplurality of locking pins capable of piercing the cord fabric andconstituted to be able to hold the start end portion of the cord fabricin a state of being stretched by being locked by the locking pin.

According to the jointing holder, the start end portion of the cordfabric drawn from the supply position can be held in the stretched stateby being locked by the locking pin to be set to the jointing mountingposition, the jointing method can excellently be carried out, and theholder after jointing the start end portion to the finish end portion ofthe cord fabric precedingly drawn is easily removed.

Particularly, as the jointing holder, it is preferable to include aframe-like member of a rectangular shape having a lateral width largerthan a width of the cord fabric, wherein locking pins capable ofpiercing the cord fabric are aligned to be projected from respective onefaces and provided to be able to lock to hold the start end portion ofthe cord fabric in a stretched state at two side portions opposed toeach other on one side of the frame-like member.

According to the jointing holder, the start end portion of the cordfabric drawn from the supply position can stably be held by being lockedby the locking pins provided to the two side portions opposed to eachother on the one side in the stretched state, and can be set to bepasted to be jointed to the finish end portion on the one side in thestate of being set to the jointing mounting portion with no problem.

Further, it is preferable that locking pins capable of piercing anunvulcanized jointing rubber member pasted to the start end portion ofthe cord fabric are aligned to be projected from two side portionsopposed to each other on other side of the frame-like member. Thereby,the jointing rubber member can stably be held in the state of beingpasted to the start end portion of the cord fabric held by the jointingholder.

ADVANTAGE OF THE INVENTION

As described above, according to the method and the apparatus ofjointing the cord fabric in the calendar line of the invention, whiledrawing to supply the cord fabric on the other side of the cord fabricdrawn from the two supply positions, by setting the start end portion ofthe cord fabric on the other side to the jointing mounting portion alongwith the jointing rubber member, when the final end of the cord fabricon the one side comes closer, the finish end portion and the start endportion can immediately be jointed easily. Particularly, the jointingcan be carried out without stopping driving the calendar line, and thetopping sheet can efficiently be fabricated while drawing to supply thecord fabric alternately continuously from the two supply positions.

Further, by using the jointing holder of the invention, the start endportion of the cord fabric constituting the jointing object can be heldwith excellent stability at the constant position in the expanded stateby being locked to the locking pin and also the jointing rubber memberpasted thereto can be held with excellent stability in the pasted stateby being locked to the locking pin.

Therefore, the side of the start end portion can be set in the state ofbeing directed to the lower side with no problem, and the finish endportion and the start end portion of the two pieces of the cord fabriccan be jointed by alternately making the finish end portion and thestart end portion disposed on upper and lower sides with no problem bysetting the jointing mounting portion to the middle of the portions oftransferring the two pieces of the cord fabric at the positions whichdiffer in the up and down direction.

BEST MODE FOR CARRYING OUT THE INVENTION

Next, an embodiment of the invention will be explained based on anexample shown by drawings.

FIG. 1 shows an outline of a calendar line which is a calendar line forfabricating the topping sheet A as shown by FIG. 11 and FIG. 12 used fora tire constituting member such as carcass ply of a tire, in whichparticularly, the weft W connecting the respective cords C is removedfrom the cord fabric F as shown by FIG. 13 constituted by being woven byconstituting warp by the cord C constituting the core member forreinforcement, thereafter, topping of the rubber R is performed at leaston one face (both faces in the drawing) thereof.

In FIG. 1, reference numeral 10 designates a supply portion of the cordfabric F as shown in FIG. 13 woven using the cord C made of a number offibers for warp and by arranging weft W at required intervals in alongitudinal direction, and 15 designates an apparatus of drawing thecord fabric F. The cord fabric F is provided with a width incorrespondence with a width of the topping sheet A constituting anobject of fabrication and is supported by a cassette type carriage 11 bybeing wound in a roll-like shape in a state of being subjected topredetermined heat treatment and adhering agent treatment. Further, asthe cord fabric F, there is normally used a cord fabric obtained bycutting a wide cord fabric into a cord fabric with necessary width towind although depending on the width.

The supply portion 10 is aligned to be provided with two first andsecond supply positions P1 and P2 capable of installing two pieces ofcarriages 11, 11 for drawably supporting the cord fabric F wound in theroll-like shape in a drawing direction, and the cord fabric F, Fsupported by the carriages 11, 11 installed at respective supplypositions P1 and P2 in drawn by the drawing apparatus 15 to be suppliedto successive portion of the calendar apparatus. Numerals 12, 12 in thedrawing designate guides for installing the carriages 11, 11 andnumerals 13, 13 designate winding portions of separating cloth forrestraining adherence in a state of winding the cord fabric F, F.

An apparatus 20 of jointing the cord fabric F drawn to be supplied asdescribed above is provided between the supply portion 10 and thedrawing apparatus 15, and when the cord fabric F of the carriage 11 atone of the first or the second supply position P1 or P2 is terminated,and the apparatus 20 joints a start end portion Fa of the cord fabric Fof the carriage 11 at other supply position P2 or P1 to the finish endportion Fb.

Numeral 30 in the drawing designates a festoon apparatus, and an endportion on a delivery side of the apparatus is provided with a centeringapparatus 31 of the cord fabric F. Numeral 40 designates a weft removingapparatus which is provided behind the festoon apparatus 30 and isprovided for finely divide the weft W provided to the cord fabric F by afew centimeters to be separated to remove from the cord C as describedlater. Numeral 50 designates a roll type calendar apparatus for toppinga rubber R from upper and lower faces of the cord C by passing a numberof pieces of the cords C removed of the weft W at the weft removingapparatus 40 and transferred by way of a dancer apparatus 45 or the liketo between a pair of calendar rolls 51, 51 in an aligned state. Numeral60 designates a cooling apparatus of the topping sheet A topped withrubber by passing the calendar apparatus 50 and transferred by way of adancer apparatus 55, numeral 70 designates a festoon apparatus behind itand an end portion on a delivery side of the festoon apparatus 70 isprovided with a centering apparatus 71 of the topping sheet A. Numeral80 designates a reeling apparatus which is provided to reel the toppingsheet A transferred by being centered by the centering apparatus 71 to areel carriage 81. In the drawing, the reel apparatus 80 is installedwith two pieces of reel carriages 81, 81 aligned in a front and reardirection and the topping sheet A is reeled alternately one by onethereto. Numeral 82 designates a reel position switching apparatus whichswitches a reeling position of the topping sheet A to positions of therespective carriages and is provided movably in the front and reardirection.

Further, the jointing apparatus 20 for jointing two pieces of the cordfabric F, F drawn to be supplied alternately from the two supplypositions P1 and P2 is constructed by the following constitution.

A transfer portion 1L of one piece of the cord fabric F drawn from thefirst supply position P1 and reaching the drawing apparatus 15 and atransfer portion 2L of other piece of the cord fabric F drawn from thesecond supply position P2 and reaching the drawing apparatus 15 are madeto differ from each other in positions thereof in the up and downdirection, and the transfer portion 1L of the one piece of cord fabric Fis set to an upper side and the transfer portion 2L of the other pieceof cord fabric F is set to a lower side. Numerals 17 and 18 in thedrawing designate guide rollers for respectively drawing the pieces ofthe cord fabric F, F.

As shown by FIG. 2 and FIG. 5, the drawing apparatus 15 is constitutedby a pair of upper and lower transferring rollers 15 a and 15 b whichcan be rotated in synchronism with each other, which are constituted tobe able to draw to supply the cord fabric F hung to the two rollers 15 aand 15 b from the two first and second supply positions P1 and P2 by wayof the guide roller 17 or 18 respectively at a predetermined speed bybeing driven to rotate by a drive motor 16 connected to the roller 15 aon one side. The drawing apparatus 15 is provided such that positions ofthe transfer portions 1L and 2L reaching the transfer roller 15 a of thedrawing apparatus 15 from the guide rollers 17 and 18 are disposed atpositions different from each other in the up and down direction.

Further, a middle portion between the upper and lower transfer portions1L and 2L reaching the drawing apparatus 15 from the guide rollers 17and 18 at the jointing apparatus 20 is provided with a jointing mountingportion 21 capable of horizontally mounting to set a jointing holder 1constructed by the following constitution.

As shown in FIG. 3 and FIG. 4, the jointing holder 1 includes aframe-like member 2 constituted by a plate member constituting a shapeof a rectangular ring having a lateral width larger than a width of thecord fabric F. at two side portions 2 a, 2 a opposed to each other onone side constituting sides of long sides of the frame-like member 2,locking pins 3 in a needle-like shape capable of piercing the cordfabric F are aligned to be projected at respective one faces thereof andprovided to be able to hold the start end portion Fa of the cord fabricF in a stretched state by locking the start end portion Fa by thelocking pins 3. Normally, the locking pins 3 are projected over a rangewider than the width of the cord fabric F constituting an object ofjointing. The locking pin 3 is provided with a head portion 3 a in ashape of a small ball a diameter of which is widened at a pin front endportion since the locking pin 3 needs to hold the comparatively coarselywoven cord fabric F in a locking state to hold to be directed in a lowerdirection, and the cord fabric F pierced to be locked by the locking pin3 can be held with excellent stability in the locking state even whenthe cord fabric F pierced to be locked thereby is directed in the lowerdirection.

Further, at two side portions 2 b, 2 b opposed to each other on otherside of the frame-like member 2, locking pin 4 capable of piercingunvulcanized rubber member Ra for jointing which is pasted to the startend portion Fa of the cord fabric F are aligned to be projected to onefaces thereof, particularly, faces thereof on the same sides as theprojecting sides of the locking pins 3. Normally, the locking pins 4 areformed over the same range as a width of the rubber member Ra, or arange slightly wider than the width of the rubber member Ra. Therefore,a dimension on a short side of the frame-like member 2 is formed to beslightly larger than the width of the rubber member Ra.

Although it is not necessarily needed that the jointing holder 1 isconstituted by the frame shape as shown in the drawing, and it is notnecessary that the jointing holder 1 holds the cord fabric F by lockingthe cord fabric F by the locking pins, practically, it is preferable inview of a holding performance of a state of stretching the cord fabric Fand an easiness in a locking operation to form the rectangular lockingpins at the two side portions opposed to each other on one side asdescribed above.

The jointing mounting portion 21 of the jointing apparatus 20 isconstituted by providing receiving plates 23, 23 opposed to each otheron inner sides of both side portions of the frame 22 and projected to aside of the supply portion 10 to be able to mount and set the jointingholder 1 of the above-described constitution and is made to be able toreceive and support both end portions in a longitudinal direction of thejointing holder 1 to hold substantially horizontally. It is preferablethat the receiving plates 23, 23 are recessed by an amount incorrespondence with a thickness of the frame-like member 2 at mountingface portions on the receiving plates, or positioning means ofprojections or the like are provided on the receiving plates so as tohold the jointing holder 1 mounted as above at a given position.

Upper and lower portions of the jointing mounting portion 21 areprovided with press members 25, 26 capable of squeezing the start endportion Fa of the cord fabric F held by the jointing holder 1 and thefinish end portion Fb of the cord fabric F on one side pasted thereto atinside of a frame of the frame-like member 2 of the jointing holder 1.The press members 25 and 26 are respectively provided continuously tooutput shafts of cylinder apparatus 27 and 28, the press member 25 on anupper side is extractably and retractably provided to be directed to alower side, further, the press member 26 on a lower side is extractablyand retractably provided to be directed to an upper side and to berespectively opposed to each other and the start end portion Fa and thefinish end portion Fb of the cord fabric F are made to be able to besqueezed at inside of the frame-like member 2 by an extracting operationby operating the two cylinder apparatuses 27 and 28. Press faces of thetwo press members 25 and 26 constitute a rectangular shape having alateral width substantially the same as the width of the cord fabric Fand a size the same as or slightly larger than a width of the jointingrubber member Ra and capable of being fitted into the frame of theframe-like member 2 and are provided to be able to carry out jointing byone press operation.

When the topping sheet A is fabricated by the calendar line of FIG. 1including the jointing apparatus 20 of the above-described embodiment,the topping sheet A is fabricated by drawing the pieces of cord fabric Fwoven by constituting the warp by the cord C from the carriages 11, 11at the two first and second supply positions P1 and P2 set at the supplyportion 10 by the drawing apparatus 15 alternately continuously one byone to supply to the successive calendar apparatus 50 and topping itwith rubber.

At this occasion, the piece of the cord fabric F on one side of the twosupply positions P1 and P2, for example as shown in FIG. 5, the cordfabric F on one side at the first supply position P1 is drawn to besupplied by passing the transfer portion 1L on the upper side, a portionof the jointing apparatus 20 between the supply portion 10 and thedrawing apparatus 15 is set as follows by using the jointing holder 1 ofthe above-described embodiment. That is, the start end portion Fa of thecord fabric F drawn from the second supply position P2 on other side isheld in a state of being stretched by being locked by the locking pins 3provided at the two side portions 2 a, 2 a opposed to each other on thelong side of the jointing holder 1, further, the unvulcanized jointingrubber member Ra is pasted to the start end portion Fa to be held to belocked by the locking pins 4 provided to the two side portions 2 b, 2 bon, for example, the short side. Under the state, as shown by FIG. 5through FIG. 7, the holder 1 is set to the jointing mounting portion 21of the jointing apparatus 20 to be directed to the upper side to makethe start end portion Fa of the cord fabric F held by the holder 1opposed to the transfer portion 1L to be prepared for jointing.

In this way, when the final end of the cord fabric F on one side whichis drawn to be supplied as described above comes closer, the drawingapparatus 15 stops drawing the cord fabric F, while continuing to supplythe cord fabric F to a portion of the calendar apparatus 50 by an amountthereof held by the festoon apparatus 30 or the like, the finish endportion Fb of the cord fabric F is pasted to the start end portion Fb ofthe cord fabric F on other side held by the holder 1 of the jointingmounting portion 21 by interposing the jointing rubber member Ra, andthe finish end portion Fb and the start end portion Fb are jointed byway of the rubber member Ra by being squeezed from upper and lower sidesby the upper and the lower press members 25 and 26. Thereafter, theholder 1 is removed, and the cord fabric F on other side is drawn to besupplied continuous to the cord fabric F on one side by operating thedrawing apparatus 15.

Further, contrary to the above-described construction, when the cordfabric F at the second supply position P2 is drawn to be supplied bypassing the transfer portion 2L on the lower side as shown in FIG. 8,the portion of the jointing apparatus 20 is set as follows by using thejointing holder 1. That is, the start end portion Fa of the cord fabricF drawn from the first supply position P1 is held in a state of beingstretched by being locked by the locking pins 3 provided to the two sideportion 2 a, 2 a of the jointing holder 1, further, held in a state ofpasting the unvulcanized rubber member Ra to the start end portion Fa bybeing locked by the locking pin 4. Under the state, as shown in FIG. 8through FIG. 10, the holder 1 is set to the jointing mounting portion 21of the jointing apparatus 20 to be directed to the lower side to makethe side of the start end portion Fa of the cord fabric F held by theholder 1 opposed to the transfer portion 2L.

In this way, as described above, when the final end of the cord fabric Fwhich is drawn to be supplied comes closer, the drawing apparatus 15stops drawing the cord fabric F, while continuing to supply the cordfabric F to the portion of the calendar apparatus 50 by an amountthereof held by the festoon apparatus 30 or the like, the finish endportion Fb of the cord fabric F is pasted to the start end portion Fa ofthe cord fabric F held by the holder 1 of the jointing mounting portion21 by interposing the jointing rubber member Ra, and squeezed from upperand lower sides by the upper and lower press members 25 and 26 to jointthe finish end portion Fb and the start end portion Fa by way of therubber member Ra.

In this way, while drawing the cord fabric F respectively from one orother of the two supply positions P1 and P2 provided to be aligned inthe drawing direction, previously, the start end portion Fa of other orone piece of the cord fabric F held by the jointing holder 1 can be setto the jointing mounting portion 21 to prepare. Therefore, when the cordfabric F precedingly drawn is terminated as described above, the finishend portion Fb can immediately be jointed to the start end portion ofthe cord fabric held as described above and jointing can be carried outwithout stopping driving the calendar line.

Further, the carriage 11 supporting the cord fabric F wound in theroll-like shape is newly switched to be installed to the vacated supplyposition P1 or P2, and the cord fabric F is prepared for jointing asdescribed above. Thereafter, the cord fabric on other side is made to beable to be drawn to be supplied continuously to the cord fabric on oneside by removing the holder 1. In this way, topping can continuously becarried out while continuously drawing to supply the cord fabric F fromthe two supply positions P1 and P2 alternately repeatedly one by one.

INDUSTRIAL APPLICABILITY

The invention can preferably be utilized for jointing for continuouslysupplying the cord fabric when the topping sheet is fabricated bytopping rubber to the cord row member constituted by cord fabric wovenby constituting warp by the cord constituting the core member forreinforcement.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a step view showing an outline of a calendar line forfabricating a topping sheet which does not include weft.

FIG. 2 is an enlarged side view to show an essential portion on a sideof a supply portion of the calendar line showing an embodiment of theinvention.

FIG. 3 is a plane view of a jointing holder used in the invention.

FIG. 4 is a sectional view taken along a line IV-IV of the same.

FIG. 5 is a side view of a state of drawing to supply cord fabric from atransfer portion on an upper side at a portion of a joint apparatus ofthe invention.

FIG. 6 is a front view of the portion of the joint apparatus in theabove-described state.

FIG. 7 is an enlarged explanatory view before jointing of the same.

FIG. 8 is a side view of a state of drawing to supply cord fabric from atransfer portion on a lower side at the portion of the joint apparatusof the invention.

FIG. 9 is a front view of the portion of the joint apparatus in theabove-described state.

FIG. 10 is an enlarged explanatory view before jointing of the same.

FIG. 11 is a perspective view substantially showing a topping sheet.

FIG. 12 is an enlarged sectional view of a portion of the topping sheet.

FIG. 13 is a perspective view substantially showing cord fabric.

DESCRIPTION OF REFERENCE NUMERALS AND SIGNS

A . . . topping sheet, C . . . cord, F . . . cord fabric, Fa . . . startend portion, Fb . . . finish end portion, 1L . . . transfer portion onupper side, 2L . . . transfer portion on lower side, P1, P2 . . . supplypositions, R . . . rubber, Ra . . . rubber member for jointing, W . . .weft, 1 . . . jointing holder, 2 . . . frame-like member, 2 a, 2 a . . .two side portions on long side, 2 b, 2 b . . . two side portions onshort side, 3 . . . locking pin, 3 a . . . head portion in small ballshape, 4 . . . locking pin, 10 . . . supply portion, 11 . . . carriage,12 . . . installing guise, 13 . . . winding portion of separating cloth,15 . . . drawing apparatus, 15 a, 15 b . . . transferring rollers, 16 .. . drive motor, 17, 18 . . . drawing guide rollers, 20 . . . jointingapparatus, 21 . . . jointing mounting portion, 22 . . . frame portion,23, 23 . . . receive plates, 25, 26 . . . press members, 27, 28 . . .cylinder apparatus, 30 . . . festoon apparatus, 31 . . . centeringapparatus, 40 . . . weft removing apparatus, 45 . . . dancer apparatus,50 . . . calendar apparatus, 51, 51 . . . upper and lower calendarrolls, 55 . . . dancer apparatus, 60 . . . cooling apparatus, 70 . . .festoon apparatus, 71 . . . centering apparatus, 80 . . . reelingapparatus, 81 . . . reel carriage, 82 . . . reel position switchingapparatus.

1. A method of jointing a cord fabric which is a method of jointing acord fabric for drawing to supply cord fabric constituted by being wovenby constituting warp by a number of pieces of cords from two supplypositions set to a supply portion alternately continuously one by one ina calendar line for topping rubber to a number of pieces of alignedcords by a calendar roll; wherein during drawing to supply of the cordfabric from one of the two supply positions, by using a jointing holdercapable of holding a start end portion of the cord fabric in a stretchedstate, the start end portion of the cord fabric drawn from other thereofis held by the holder and set to a jointing mounting portion in a stateof pasting an unvulcanized jointing rubber member to the start endportion; and wherein when a final end of the cord fabric on one sidecomes closer, a finish end portion of the cord fabric on the one side ispasted to a start end portion of the cord fabric on other side held bythe holder of the jointing mounting portion by interposing the jointingrubber member, the finish end portion and the start end portion arejointed by way of the rubber member by being squeezed from upper andlower sides, thereafter, by removing the holder, the cord fabric on theother side is made to be able to be drawn to be supplied continuously tothe cord fabric on the one side.
 2. The method of jointing cord fabricin a calendar line according to claim 1, wherein the jointing holderprojected with a plurality of locking pins capable of piercing the cordfabric is used, and the start end portion of the cord fabric is set tothe jointing mounting portion in a state of being locked to be held bythe locking pins.
 3. The method of jointing cord fabric in a calendarline according to claim 1 or 2, wherein a transfer portion reaching adrawing apparatus of the cord fabric on the one side drawn from the oneof the supply positions and a transfer portion reaching the drawingapparatus of the cord fabric on the other side drawn from the supplyposition on the other side are made to be disposed at positionsdifferent from each other in an up and down direction, the jointingmounting portion is provided at a middle position of the transferportions, when the cord fabric on the one side passing the transferportion on an upper side is drawn, the jointing holder is set bydirecting the start end portion of the cord fabric on the other sideheld by the jointing holder to an upper side, further, when the cordfabric on the other side passing the transfer portion on a lower side isdrawn to be supplied, the holder is set by directing the start endportion of the cord fabric on the one side held by the holder to a lowerside.
 4. An apparatus of jointing a cord fabric in a calendar line whichis an apparatus of jointing a cord fabric for drawing to supply the cordfabric constituted by being woven by constituting weft by a number ofpieces of cords from two first and second supply positions set to asupply portion alternately continuously one by one in a calendar linefor topping rubber to a number of pieces of aligned cords by a calendarroll; wherein a transfer portion reaching a drawing apparatus of thecord fabric on one side drawn from the first supply position and atransfer portion reaching the drawing apparatus of the cord fabric onother side drawn from the second supply position are disposed atpositions different from each other in an up and down direction, at amiddle position of the two transfer portions, a jointing mountingportion capable of setting a jointing holder capable of holding a startend portion of the cord fabric in a stretched state is provided, andupper and lower portions of the jointing mounting portion are providedwith press members capable of squeezing the start end portion on thecord fabric on the other side held by the jointing holder and a finishend portion of the cord fabric on the one side pasted thereto from upperand lower sides.
 5. A jointing holder of cord fabric which is a jointingholder used for jointing a cord fabric constituted by being woven byconstituting warp by a number of pieces of cords; wherein the jointingholder is projected with a plurality of locking pins capable of piercingthe cord fabric and constituted to be able to hold the start end portionof the cord fabric in a state of being stretched by being locked by thelocking pin.
 6. The jointing holder of cord fabric according to claim 5,including a frame-like member of a rectangular shape having a lateralwidth larger than a width of the cord fabric, wherein locking pinscapable of piercing the cord fabric are aligned to be projected fromrespective one faces and provided to be able to lock to hold the startend portion of the cord fabric in a stretched state at two side portionsopposed to each other on one side of the frame-like member.
 7. Thejointing holder of cord fabric according to claim 6, wherein lockingpins capable of piercing an unvulcanized jointing rubber member pastedto the start end portion of the cord fabric are aligned to be projectedfrom two side portions opposed to each other on other side of theframe-like member.